//   Copyright 2012,2013 Vaughn Vernon
//
//   Licensed under the Apache License, Version 2.0 (the "License");
//   you may not use this file except in compliance with the License.
//   You may obtain a copy of the License at
//
//       http://www.apache.org/licenses/LICENSE-2.0
//
//   Unless required by applicable law or agreed to in writing, software
//   distributed under the License is distributed on an "AS IS" BASIS,
//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//   See the License for the specific language governing permissions and
//   limitations under the License.

package com.saasovation.collaboration.port.adapter.service;

import java.lang.reflect.Constructor;

import com.saasovation.collaboration.domain.model.collaborator.Collaborator;
import com.saasovation.common.media.RepresentationReader;

public class CollaboratorTranslator {

    public CollaboratorTranslator() {
        super();
    }

    public <T extends Collaborator> T toCollaboratorFromRepresentation(
            String aUserInRoleRepresentation,
            Class<T> aCollaboratorClass)
    throws Exception {

        RepresentationReader reader =
                new RepresentationReader(aUserInRoleRepresentation);

        String username = reader.stringValue("username");
        String firstName = reader.stringValue("firstName");
        String lastName = reader.stringValue("lastName");
        String emailAddress = reader.stringValue("emailAddress");

        T collaborator =
            this.newCollaborator(
                    username,
                    firstName,
                    lastName,
                    emailAddress,
                    aCollaboratorClass);

        return collaborator;
    }

    private <T extends Collaborator> T newCollaborator(
            String aUsername,
            String aFirstName,
            String aLastName,
            String aEmailAddress,
            Class<T> aCollaboratorClass)
    throws Exception {

        Constructor<T> ctor =
            aCollaboratorClass.getConstructor(
                    String.class, String.class, String.class);

        T collaborator =
            ctor.newInstance(
                    aUsername,
                    (aFirstName + " " + aLastName).trim(),
                    aEmailAddress);

        return collaborator;
    }
}
